Jabber.org is the original IM service based on XMPP and one of the key nodes on the XMPP network.. You can create an account by visiting register.jabber.org (or use one of the other fine public XMPP services ).. To log in, use an IM client like Adium, Gajim, iChat, Pandion, Pidgin, Psi, or Swift ...

Instantmessaging software for intranets, Intra office , inter office messenger, conferencing and communication software. For corporations and enterprises, from small to large offices. Instantmessaging at work and home. Network management and access software for Microsoft Windows